template issue with clang::RedeclarableTemplateDecl::SpecIterator

Hi,

run into a weird error message when tried to compile a project…

tools/clang/include/clang/AST/DeclTemplate.h:560:22: error:
no matching constructor for initialization of ‘SetIteratorType’ (aka
‘FoldingSetVectorIterator<clang::FunctionTemplateSpecializationInfo,
typename SmallVector<FunctionTemplateSpecializationInfo *, 8>::iterator>’)
SpecIterator() : SetIter() {}
^
Actually the user of the code is wrong to default construct for the iterator. But I think it would be more elegant to not declare default construtor, if the parent class does not have it. Namely the llvm::FoldingSetVectorIterator class does not have, therefore the clang::RedeclarableTemplateDecl::SpecIterator should not have either.

What do you think?

Regards,
Laszlo

(necromancy alert)